Fatal error: Uncaught TypeError: call_user_func_array(): Argument #1 ($callback) must be a valid callback, function "_wp_theme_json_webfonts_handler" not found or invalid function name in /data01/virt106391/domeenid/www.ilukutse.ee/htdocs/wp-includes/class-wp-hook.php:310 Stack trace: #0 /data01/virt106391/domeenid/www.ilukutse.ee/htdocs/wp-includes/class-wp-hook.php(334): WP_Hook->apply_filters(NULL, Array) #1 /data01/virt106391/domeenid/www.ilukutse.ee/htdocs/wp-includes/plugin.php(517): WP_Hook->do_action(Array) #2 /data01/virt106391/domeenid/www.ilukutse.ee/htdocs/wp-settings.php(495): do_action('plugins_loaded') #3 /data01/virt106391/domeenid/www.ilukutse.ee/htdocs/wp-config.php(112): require_once('/data01/virt106...') #4 /data01/virt106391/domeenid/www.ilukutse.ee/htdocs/wp-load.php(50): require_once('/data01/virt106...') #5 /data01/virt106391/domeenid/www.ilukutse.ee/htdocs/wp-blog-header.php(13): require_once('/data01/virt106...') #6 /data01/virt106391/domeenid/www.ilukutse.ee/htdocs/index.php(17): require('/data01/virt106...') #7 {main} thrown in /data01/virt106391/domeenid/www.ilukutse.ee/htdocs/wp-includes/class-wp-hook.php on line 310